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I failed to notice that the guests that pinged each other with packet loss were in different networks, so the traffic effectively was routed through the main switch. The switch that I had my doubts about in the past (Mikrotik CSS326-24G-2S+). I tried rebooting the switch and the packet loss is...

Bump (changed whole post)

Hi, I had to rewrite this whole post, because it was misleading. I claimed to resolve my lost packets issue, but turns our I haven't. I get packet loss of ~1-30% to neighbouring guests and the outside network - not always, but in spikes, say once every 15 seconds? 224 packets transmitted, 157...

I do have multiple IPs, but in this setup I'm using one IP, for both mailcow and pmg. Yes, the ports are forwarded.

Thanks for the reply, I just tested that, and nothing changes. Message bounces the same. (mail for [10.0.0.7]:25 loops back to myself)

Hi, in my setup I have PMG and mailcow next to it. I'm trying to figure out what is the correct DNS and hostname setup for these. `mail.mydomain.net` is the MX server and DNS/rDNS is set to the public ip. Port 25 goes to PMG (ip: 10.0.0.6) Ports 80,110,143,443,465,587,993,995,4190 go to...

Thank for the reply. They were among the cheaper ones, but could you tell me how have you asserted their quality?

Thank you for taking the time to respond. I find it really hard to believe, that it would be better to get old server HDDs, but at the same time, I think there is no way they are gonna perform worse. The disks are: Dell R720 (ZFS): SATA SSD: 2x ADATA SU650 120GB (ASU650SS-120GT-R) NVME SSD: 2x...

Hi, I've been trying really hard to overcome this myself, but here I am. Please halp. I'm setting up a new install of Proxmox 8.1.3 on Dell R720. I'm expecting significantly higher speeds than what I'm getting during ZSTD backups. Currently there is only one container in it (at idle). Nothing...

This is no longer a question, since I figured it out on my own, but I'd like to share that information. Spoiler alert, this is not directly related to proxmox, but more to MySQL maintenance, which might be obvious to experienced admins, but it wasn't to me. I'm running Proxmox Virtual...